weigel



' A. A. WEIGEL.

ANTIFRICTION BEARING.

APPLICATION FILED MAR-3,1919.

Patented Nov. 4, 1919.

2 SHEETS-SHEET I.

A. A. WEIGEL.

ANTIFBICTION BEARING.

APPLICATION FILED MAR- 3.1919- Patented N 0v. 4, 1919.

2 SHEETS-SHEET 2- Jim R arr; as mars are.

ARNOLD A. WEIGEL, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, T0

SOPHIE L. WOODS, OF CHICAGO, ILLINOIS.

ANTIFRICTION-BEARING.

Specification of Letters Patent.

Application filed March 3, 1919. Serial No. 280,292.

To all whom it may concern Be it known that I, ARNOLD A. WEIGEL, a citizen of the United States, and a resident of Chicago, in the county of Cook and State,

d spective in Fig. 5), located within the casof Illinois, have invented certain new an useful Improvements in Antifriction-Bearings; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification This invention relates to improvements in antifriction bearings and consists of the matters hereinafter described and more particularly pointed out in the appended claims.

The invention is herein illustrated as appliedfor use in connection with aside bearing for railway cars and more particularly adapted to be. mounted to a side bearing on the truck bolster of said car. The objects of the invention, as well as the many advantages thereof, will be more apparent as I proceed with my specification.

In the drawings Figure l is a view representing a longitudinal section through the improved antifriction bearing, the plane of the section being indicated by the line 11 of Fig. 2.

ig. 2 represents a top plan view of the same, with a part of the casing shown as broken away, to more clearly illustrate the interior construction.

Fig. 3 represents a transverse section through the improved antifriction bearing, the plane of the section being indicated by the line 3-3 of Fig. 2. i

Fig, 4 represents a View similar to that shown in Fig. l,bT1t with the parts arranged in a different relation.

Fig. 5 represents a perspective View of a filler block embodied in my improved antifriction bearing.

Referring now in detail to that embodiment of the invention illustrated in the accompanying drawings 10 indicates the casing, in the form-of an open bottom, rec-- tangular shell, of a length somewhat greater than its width. Said casing has upright side and end walls 11 and 12 respectively, at its top, which define an elongated top opening or slot 14, and ears 15 at its bottom corners by means of which it is attached to a truck bolster 16 of a railway inwardly extending side flanges 13 car. In the side and end walls, near the bottom edges thereof, are provided the usual ventilating opening 17 indicates a ing, which rests upon the truck bolster 16. Said filler block comprises upright, spacedapart side members 18, 18, which are connected' together at their middle bottom parts s filler block (shown in perhaving a hardened steel center pin providing laterally extending trunnions 24. The roller is of a widthapproximating that of the slot 14 before mentioned, and is of such a diameter that its top part projects through said slot into a plane above that of the top of the casing, so as to be engaged by a complemental bearing surface on the body bolster 25, while the equaling the width of the filler block.

The inner opposed corners of the side members '18 of the filler block 17 are rounded as shown to provide bearing pockets 26 to be engaged by the trunnions 24 when the roller reaches the end of its path of travel in either dlrectlon on the wear plate, said pockets being so arranged that the rollerwill never bear upon or engage against the end walls 14 of the casing. The bearing pockets 26 include relatively short, oppositely disposed surfaces 26 which are inclined downwardly toward the middle of said .filler block, in planes indicated by the dash and dot lines, as shown in Figs. 1 and 4. The wear plate 22'terminates at each end short of'the end of the path of travel of the trunnion pin is of a length roller, so that the roller is released from contact with the wear plate just shortly prior to reaching either endof its path of travel, at

which time the trunnions of the roller engage upon the short inclined surface 26 so as to guide the said trunnions into the pockets 26; The center of the bearing pockets are spaced above the plane of contact of the ends of the wear plate a distance slightly greater than that of the radius of the roller so that only an almost imperceptible rise or vertical movement is imparted to the roller when it ceases to bear upon the wear plate and its trunnions come to bear in the pockets 26. Thus there is one point proximate to each end of the path of travel of the roller where the load is transmitted both from the wear plate to the body of the roller and from the surfaces 26 of the pockets to the trunnions, this point being where the trunnions first come to bear against said parts 26" of the bearing pockets, as indicated in dotted lines in Fig. 4. After this point is passed, the,

roller rotates in fixed bearings formed by the pockets 26, as shown in full lines in Fig. 4, without further longitudinal movement in the casing.

When the roller is released from the load imposed upon it by the body bolster 25, it will by gravity, roll on its trunnions inwardly toward the center of the casing, upon the inclined surfaces 26*, the periphery of the roller then engaging the associated end of the wear plate which, by reason of its top surface, as before mentioned, will act to center the roller with reference to the casing. Thus the roller is maintained at the center of the casing when not transmitting load, without the aid of springs, where it is at all times ready to be engaged by the body bolster and to roll toward either end of the casing when load is again transmitted to it.

My improved bearing is made'up of but few parts which may be easily assembled and which, when interposed between the truck and body bolster of a car, provides for a greater range of oscillation between said bolsters, without increasing the size of the antifriction bearing.

While in describing my invention, I have referred to certain details of construction and relative arrangement of parts, I do not wish to be limited thereto except as pointed out in the appended claims.

I claim as my invention:

1. In a truck bolster bearing, a casing adapted for attachment to the truck bolster, said casing being open at the bottom and having flanges at the top defining a longitudinally extending slot, an antifriction roller projecting through said slot and having trunnions at its ends located below said flanges, a filler block in the bottom of said casing, said filler block having side members and a transverse bridge member, the bridge member being provided with an upwardly facing bearing surface for the roller, and the side members presenting arcuate bearing pockets adapted to receive the roller trunnlons at the ends of a pre-determined length of travel of said roller, said bearing pockets having downwardly inclined parts for returning the roller to its central position by gragitation when the roller is released from 2. In a truck bolster bearing, a casing adapted for attachment to the truck bolster, said casing being open at the bottom and having flanges at the top defining a longitudinally extending slot, an antifriction roller projecting through said slot and having trunnions at its ends located below said flanges, a filler block in the bottom of said casing, said filler block having side mem bers and a transverse bridge member, the bridge member being provided with an upwardly faced bearing surface for the roller, said bearing surface being inclined slightly from both ends toward the middle, and the side members presenting arcuate bearing pockets adapted to receive the roller trunnions at the ends of a predetermined length of travel of said roller, said bearing pockets having downwardly inclined parts for returning the roller to its central position by gravitation when the roller is released from load.

3. In a truck bolster bearing of the kind 'described, in combination with a casing ARNOLD A. WEIGEL.

Witnesses:

T, H. ALFREDs, D. DARRENOUGU'E. 

